Know all about Marl and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Greenschist belongs to Metamorphic Rocks.Texture of Marl is Earthy whereas that of Greenschist is Foliated, Platy. Marl appears Rough and Dull and Greenschist appears Layered and Shiny. The luster of Marl is dull while that of Greenschist is shiny. Marl is available in beige, brown, green, grey, white colors whereas Greenschist is available in dark greenish - grey, green colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Greenschist are blackboards, manufacture of tools, writing slates.